Norton 66253319951 Surface Grinding Wheel 14in 60 Grit

Product Description

The NORTON 66253319951 is a Type 5 surface grinding wheel built for demanding material removal on soft carbon steels, tool steels, and super alloys. It measures 14 inches in diameter, 2 inches thick, with a 5-inch hole and a one-side recess of 0.5 inches at 8 inches diameter. The abrasive is aluminum oxide with a vitrified bond, rated at 60 grit and H hardness code (medium grade). The wheel carries a maximum operating speed of 2320 RPM. At 11.93 pounds, it is sized for industrial-grade surface and cylindrical grinders. The 38A series designation indicates a semi-friable, white aluminum oxide grain structure suited to precision grinding applications where heat control matters.

This wheel is intended for use on surface grinders and cylindrical grinders in both production and toolroom environments. Typical applications include finish and rough grinding of soft carbon steels, tool steels, and super alloys. The medium grade and 60 grit combination makes it a practical choice for operators balancing stock removal rate with surface finish quality. It is installed and dressed by grinding machine operators and toolroom machinists working with stationary grinder setups.

Key Features

• Type 5 recessed wheel with one-side recess at 8 inches diameter and 0.5 inches depth for clearance in recessed-hub applications
• 38A aluminum oxide grain — semi-friable, white, suited to heat-sensitive materials and precision tolerances
• Vitrified bond provides rigidity and porosity for consistent chip clearance during grinding
• 60 grit medium grade balances aggressive stock removal with acceptable surface finish
• H hardness code (soft hardness rating) promotes self-dressing action on harder workpiece materials
• Rated to 2320 RPM maximum operating speed

Compatibility

Designed for use with surface grinders and cylindrical grinders. Material applications include soft carbon steels, tool steels, and super alloys as specified by the manufacturer.

Installation Notes

Grinding wheel mounting and replacement should be performed by qualified machine operators following ANSI B7.1 safety standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test prior to installation. Power down and lock out the grinder before removing or installing any wheel. Never exceed the maximum operating speed of 2320 RPM marked on the wheel.